John h



Oct. 9, 1923. 1,470,135

, .1. H. BALLWEG LAMP Filed Aug. 17. 1921 Patented Get. 9, 1923.

Parent caries.

Jenn BrrIiLWEG, or ronrnenn, cannon.

LAMP.

Application filed August 17, 1921. Serial No. 492,963.

To all whomc't may concem:

Be it known that I, JOHN H. BALLwnc, a citizen of the United States, residing at Portland, county of Multnomah, State of Oregom-have invented certain new and useful Improvements in Lamps, of which the following is a specification.

My invention relates to lamps'in general, and particularly to electric flash lamps, the object being toiovercome certain defects and disadvantages in such lamps asheretofore in use and explained hereinafter.

I accomplish the above objects, and other desirable results that will hereinafter apear b means of the construction illustrated in the accompanying drawing, which is a part of this application for Letters Patent,- likefcharacters of reference indicating like parts throughout the several views thereof, and in which:

Fig. '1 is a sectional elevation of my device.

Fig. 2 is aslde elevation of the'same.

Fig. 3 is a plan view ofthe switch unit closed.

Fig. l is asection of the switch unit upon line 4-4 of Fig. 1.

Fig. 5 is a plan view of the switch unit open.

It is well known that in lamps of a similar type at present in use the batteries have a decided deteriorating eflect upon the casing, especially after the batteries have become worn out by use, often resulting in complete destruction of the casing and electrical connections therein. It is the main object of my invention to overcome that disadvantage, and to construct a flash lamp in which those parts usually aifected by the batteries are an integral portion of the batteries, and areso cheaply constructed that they may eco nomically be discarded when the bat teries are used up, like parts being supplied with new batteries.

It is also well known that when the casing of a flash lamp has become damaged by the batteries the head containing the electric lamp, reflector and lens is not usually damaged, and a further object of my invention is to provide a device whereby a battery unit integral with its casing may be attached to such a head from the ordinary flash lamp. 0

In general my device consists of a battery unit composed of one or more battery cells secured within a suitable casin a switch D7 I unit securable upon said battery unit, and a head or lamp containing unit securable upon said switch unit.

The construction of my battery unit is such that it may be constructed and sold almost as cheaply as the battery cells at present are sold, so that the cost to the consumer of replacing batteries will be negligible. The construction of the switch unit is such that it may be secured to any ordinary flash lamp head, thereby allowing the use of a head from a flash lamp the casing of which has been destroyed. In this manner I provide that the owner of a damaged flash lamp need only purchase my battery unit and switch unit and attach them to the head of his damaged flash lamp, and thereafter only purchase my battery units as the batteries are worn out.

In Fig. 1 of the accompanying drawing I illustrate two battery cells, the lower cell 6 having a metallic casing 7 integral therewith, the upper cell 8 being contained within said casing 7 but insulated therefrom by. an insulating member 9. Said insulating member 9 may be of any convenient material, preferably paper but may also be of suitable insulating paint such as asphaltum or the like.

Secured to that end of the casing 7 adjacent the cell 8 is a switch member mounted within a suitable container 9, said container being secured to the casing 7 in any convenient and suitable manner, being shown threaded thereupon in the drawing. The usual flash lamp head 10 is mounted upon said switch unit container 9 in any convenient and suitable manner, being shown threaded thereupon in the drawing. Said head contains the usual reflector 11, electric lamp 12 and lens 13.

Closing that end of the switch unit container 9. adjacent the head 10 is a diaphragm 14 secured to said container 9 in any convenient and suitable manner, rivets 15 being shown in the drawing for this purpose.

Mounted upon one side of said diaphragm 1 1 is an electrical contact member 16 adapted to make electrical contact with the terminal of the electric lamp 12, as shown in Fig. 1. Said contact member is secured to latively to the battery cells 6 and Band to the electric lamp 12, as shown in Fig. 1.

Secured upon said switch lever 18 is a switch blade.

Said switch lever is of insulating material, such as fiber or the like, and secured thereon is a switch blade 19 adapted to electrically connect one pole of the battery cell 8 with the rivet 17 when the switch lever 18 is alined with the contact member 16 as shown in Figs. 1 and 3. a The free end of said switch lever 18 protrudes through a slot 20 in the switch container 9 and terminates: in a thumb piece 21. adapted for rotary movement upon said container 9 about the pivotal point of said switch lever 18. When said lever 18 is moved out of alinement with said contact member .16, as shown in Fig. 5, the switch blade leaves the rivet l7 and thereby breaks the electric circuit and extinguishes the electric lamp 12. Said switch lever is operated by said thumb piece 21.

The electric circuit is from battery cell-6 to ,battery cell 8, switch blade 19, rivet 17, contact member 16, electric lamp 152, reflector 11, head 10, switch container 9, casing 7, to battery cell 6.

My device may be made of any size, and constructed of any materials deemed convenient and suitable for a device of this character, and while I have illustrated and described a form of construction and arrange ment of parts found desirable in materializ Having disclosed my invention. so. that others may be enabledfto construct and to use the same, What I claim as new, and desire to secure by Letters Patent is:

1. In an electric lamp; an electric battery cell having a metalic outer casing forming one electrode thereof, and extending above sald cell; an electricibattery cell within the extension of said casing; an insulating medium between saidlattercell ands-aid :cas-

ing; a switch containing member' removably mounted upon the terminus ofthe extension. of said casing; a lamp bearing, head remov sulating diaphragm therein .a lamp contact.

upon one zsideofsaid diaphragmya switch actuator pivoted upon said diaphragm at point axially alined with the batteries and the lamp, and .having -a contacts member adapted to make and break contactwith the central electrode of the battery. andsaid lamp contact. a

In Witness eree .9 am.a itat n as my own I hereunto signature in the presence of two witnesses. at Portland, countyv of Multnomah, State of Oregon, this 9th day of Aug., 1921.

JOHNEBALLWEG/ Witnesses-z y; v

. L. J. ROBINSON, 

